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A method for measuring the overall gas content in oil and gas two-phase flow

A measurement method, oil and gas technology, applied in the direction of material capacitance, etc., can solve problems such as easy to be polluted, disturbed by flow patterns, and expensive

Active Publication Date: 2019-02-15
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods are expensive, easily polluted, severely disturbed by flow patterns, and can only measure local phase holdup

Method used

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  • A method for measuring the overall gas content in oil and gas two-phase flow
  • A method for measuring the overall gas content in oil and gas two-phase flow
  • A method for measuring the overall gas content in oil and gas two-phase flow

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Embodiment Construction

[0044] Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0045] refer to Figure 1 to Figure 7 , in one embodiment, a kind of measuring method of bulk gas holdup in oil-gas two-phase flow, comprises the following steps:

[0046] S1. For multiple different working conditions in at least one type of working condition, use the ECT sensor to measure the capacitance data at multiple time points within a certain period of time, and use the gas flowmeter and the oil phase flowmeter to measure the gas and oil phases respectively flow rate, wherein the plurality of different working conditions in one type of working conditions refer to working conditions with the same oil phase flow rate and different gas phase flow rates;

[0047] S2. For each different working condition, expand the collected capacitance data into ...

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Abstract

The invention discloses a method for determining the overall gas content in an oil-gas two-phase flow. The method comprises the following steps: correlating oil gas experimental results under various working conditions with accumulated characteristic values of power spectral density, forming a table about the working conditions and the accumulated characteristic value, and then on the basis of the table, looking up the table to quickly acquire the overall gas content in a pipeline.

Description

technical field [0001] The invention relates to the measurement of oil-gas two-phase flow, in particular to a method for measuring the overall gas content in oil-gas two-phase flow. Background technique [0002] Two-phase flow systems are ubiquitous in industrial processes such as petroleum, chemical, energy and power. In the process of crude oil extraction, in order to formulate transportation and treatment strategies during oil and gas development, the flow ratio of the two phases of oil and gas in the pipeline needs to be considered. And due to the complexity of the two-phase flow system, the online measurement of the above parameters is very difficult. [0003] The flow ratio of the oil-gas two-phase in the pipeline, that is, the overall gas holdup or overall liquid holdup in the pipeline, is closely related to the flow pattern of the oil-gas two-phase flow. The flow pattern is closely related to many factors such as the temperature, pressure, fluid physical properties...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/22
CPCG01N27/22
Inventor 陈教选李轶
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV